Type-writing machine



(No Model.) I '2 Sheets-Sheet 1..

G. H. LASAR.

TYPE WRITING MACHINE.

N0. 415.523. Patented Nov. 19, 1889.

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UNITED STATES PATENT OFFICE.

GODFREY H. LASAR, OF ST. LOUIS, MISSOURI.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 415,523, dated November 19, 1889.

, Application filed Jctober 11, 1886. Serial No. 215,904. (No model.)

To all whom it may concern:

Be it known that I, GODFREY I-l. LASAR, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Type JVriting Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, and in which Figure l is a front view of the carriage mechanism of my improved machine, a portion of the front rail being omitted to exhibit the carriage-spring. Fig. 2 is a rear view of same. Fig. 3 is a top View thereof in the position shown in Fig. 2. Fig. 4is a section on line 4: 4, Fig. 2, looking in the direction of the arrows. Fig. 5 is a top view of the escapement of the machine. Fig. 6 is an enlarged front view of the escapement. Fig. 7 isa detail perspective view of same. Fig. 8 is an enlarged detail top view showing one end of the carriage. Fig. 9 is a perspective view of same. Fig. 10 is a transverse vertical sec tion on line 10 10, Fig. 8, looking in the direction of the arrows. Fig. 11 is an elevation showing the other end of the carriage from that shown in Figs. 8, 9, and 10. Fig. 12 is a side elevation of the escapement mechanism, showing a modification in the means for returning the dogs to normal position.

' This invention relates to certain improvements in type-writing machines; and it consists in features of novelty hereinafter fully described, and pointed out in the claims.

Referring to the drawings, A represents the part of the main frame of a type-writer that supports the carriage mechanism. This frame is provided with an upward extension A, into which is dovetailed a dowinvardly-extending projection B of a track-frame B. To the front of the track-frame are journaled the grooved rollers B upon which the front portion of the carriage is supported and upon which it moves back and forth, the carriage having a front rail 0', which rests and works in the rollers B At the rear side of the track-frame B are journaled the grooved rollers B on which the rear angular rail O of the carriage is supported. The carriage C is provided with a rack C in which engages a fixed dog D and a pivoted dog D of the escapement. Both of these dogs are secured to a vertically-movable plate D, which is dovetailed into the projection B of the frame B, and the plate is connected by means of a pitman D to an operating-key D Each time the key D is operated or each time one of the keys of the machine is operated the escapement-plate D is pulled down, disengaging the pivoted dog D from the teeth in-the rack. and bringing the fixed dog D into engagement. The rod or pitman D is connected to the es capement-plate D (see Figs. 2,4, and 6) by a thumb-screw E, passing through a slot E in the pitman D so as to permit of an adjustment of the pitman D to change, if necessary, the vertical movement of the escapementplate. The fixed dog D is arranged over the rack, as shown in Figs. 4 and 6, so as to move vertically into engagement with the rack when the escapement is pulled down,an d the pivoted dog, when the escapement is pulled down, moves vertically out of engagement with the rack. This dog is pivoted or secured to apintle D passing through a projection D secured to or formed upon the plate D, and when in engagement with the rack it bears against a lug D on the extension or projection D (See dotted lines, Fig. 5.) When the escapement is pulled down, this dog is moved into the position shown in full lines in Fig. 5 by means of a spring D adjusted to throw the dog the distance of a notch or tooth, secured to the projection D or to any other fixed part of the escapement, and entering a perforation D in the dog, or it may be secured to the dog in any other suitable manner. Now,when the escapement is pulled down, this spring D moves the dog D back away from the lug D the distance of one notch or tooth in the rack, so that when the escapement moves upward again the dog will engage the next tooth to that previously occupied by it, and the carriage will then be moved forward the distance of one tooth (it being understood that the fixed dog moves out of engagement with the teeth of the rack as the pivoted dog moves into engagement) under the influence of a spring F, and the movement of the carriage is checked or stopped by the dog D coming against the lug D Thus each time the escapement moves downward the carriage is held from movement by the fixed dog, and each time the escapement moves upward the carriage is allowed to move forward the distance of one notch or tooth by the action of the pivoted dog.

I11 case it is desired to run the carriage back and forth without printing, it can be done be forcing the pivoted dog (without lowering the escapement) out of engagement with the teeth of the rack by forcing it into the position shown in dotted lines, Fig. 7, where it comes against a lug D on the projection D and into this position it is forced by means of a push-rod D, upheld at its inner end by the lug D through which it passes, and supported at its outer end by a lug or bracket D secured to or formed upon the frame B, (see Fig. 2,) there being a spring D located between the bracket D and the head D of the push-rod, for the purpose of holding the push-rod back out of engagement with the dog D except when it is forced inward to disengage the dog from the teeth of the rack, as stated.

The rod D is sufficiently flexible to bend slightly at its inner end to permit it to follow the movement of the plate, the hole in the lug D for the inner end of the rod being larger than the rod to allow for free play of the inner end of the rod.

When the escapement has been pulled down and the pressure has been removed from the operating-keygthe escapement moves up automatically under the influence of a spring D (see Fig. 6,) or it may be moved upward under the influence of a spring-frame arrangement, as shown in Fig. 12, where D is a rod connected to the projection D of the plate and to the cross-bar or rod D of a frame D extending beneath the key-levers D. The frame is hinged to the pivot-bar D of the key-levers and provided with alug D pressed downward by a spring D surrounding a pin D beneath the pins head D the pin being secured to the base D as usual. The spring F is connected to the carriage at F and is in-form quite similar to the spring used for the same purpose on the well-known Remington machine; but instead of being located at one end of the carriage it is located in the center and is pivoted by means of a bolt or pin F to the front side of the projection B of the frame B. By thus providing a means for the support of and by thus locating the spring at the center of the track-frame a neater and more compact arrangement is had. The spring, as stated, being secured to the front side of the projection B, it does not interfere with the connection of the frames B and A, nor does it interfere with the operation of the escapement nor the adjustment of the carriage up or down.

G represents a movable paper shield or guide, which acts also to hold the paper '0 of the carriage.

against the roller 0 of the carriage, it being capable of being moved from the position shown in full lines to the position shown in dotted lines for the purpose of inserting the sheet of paper to be printed upon. It is thus moved by a rock-shaft H, journaled in 'suitable supports II, by which it is secured to the ends 0 of the carriage. It is provided with one or more notched projections H (see Fig. 4,) which receive lugs or projections G, depending from the bottomof the guide or shield G. It will thus be seen that as the shaft II is rocked back and forth the shield or guide G will be moved to and from the roller The shaft is thus rocked by means of a lever I, secured thereto, and which is provided with apawl or dog I, engaging teeth or notches I in one of the end pieces C of the carriage, the pawl being held into engagement with the teeth bya spring 1 hen all or part of one line has been written and it is desired to run the carriage back for a fresh line, it may be done by means of a bell-crank lever J, pivoted at J to a plate J secured to one of the end pieces of the carriage. As the carriage is thus run back by means of this bell-crank lever the paperroller 0 of the carriage is turned to move the paper the distance of one line by means of a spring-dog J engaging aratchet-wheel J on one end of the roller, (see Figs. 8, 9, and 10,) the dog being moved inward toward the roller each time the bell-crank lever J turns outward on, its pivot J, which it does each time pressure is applied to run the carriage back. The inward movement of the dog (and consequently the movement of the roller) is limited by the outer end of the bell-crank lever J coming against a lug or projection J on the plate J (See Figs. 1, 3, 8, and 9.) The backward movement of the dog (or its movement in a direction-awayfrom the roller) is limited by the outer end of the leverJ coming against a pivoted block L, as shown in Figs. 8 and 9, so that the dog is merely allowed to move back far enough to. engage the next tooth of the ratchet-wheel to that last occupied by it; but in case it should be desired to have the dog engage the second tooth behind that last occupied by it, so as to give a double space on the sheet, it may be done by throwing the pivoted block L up, so as not to be engaged by the end of the lever J, and the lever will then come against a lug or projection J 6 on the plate J and then the next time thelever J is operated the roller will be turned the required distance for a double space.

In case it is desired to turn the roller backward the dog J 3 may be disengaged from the ratchet-wheel by means of a push-pin J located over the dog and'guided and held in a projection J secured to this end piece of the carriage.

If it should be desired to change the relative positions of the frames A and B, it may be done by a screw M, held in alu g M, formed upon or secured to the projection A of the frame A, and which screws into a lug M formed upon or secured to the projection B, and this screw is provided with a wheel M or by other suitable means by which it may be turned.

The principal object in making the carriage vertically adjustable is to retain, in making manifold copies, the same striking center vertically for the types as when single copies are being made. Thus, in case a machine is constructed in such a manner that the type-levers have an upward stroke, the carriage would (when making manifold copies) be elevated or raised slightly by turning the wheel M so that the type-bars would move the same distance to print with a number of sheets in as with a single sheet. other hand, if the type-bars have a downward stroke or movement and manifold copies are,

being made, the carriage will be moved downward slightly to retain the same striking center for the type.

I am aware of Letters Patent of the United States numbered 344,933, and dated July 6, 1886, and do not claim, broadly, the combination, with a carriage having a rack, of a sliding plate provided witha fixed dog and a movable dog, nor the combination of a carriage provided with a rack, a sliding plate provided with a fixed dog projecting over the rack, and a movable dog with means for limiting the movement of the movable dog and reciprocating the plate.

I claim as my invention- 1. An escapement for type-writers, consisting of a sliding plate D, having a projection D, a fixed dog D, pivoted dog D secured to the projection, having perforation D lug D and a spring D secured to the plate and to the pivoted dog.

2. The combination, with a carriage, of the main frame A, formed with an upward proj ection A and a laterally-projecting lug M, the track-frame B, formed with a downward projection B, sliding in the projection of the On the main frame and having a laterally-projecting lug M and the adj listing-screw M working in the lugs.

3. The combination, with a carriage having a rack, of a sliding plate provided with a fixed dog and a movable dog, means, substantially as described, for reciprocating the plate, lugs or projections on the plate for limiting the movement of the movable dog in either direction, and a push-rod for disengaging the movable dog from the rack.

4. The combination of a carriage having a paper-roller, a movable guide or shield having a downwardly-projecting outer portion and an upwardly-projecting inner portion, and a lever and pawl-and-ratchet mechanism, substantially as described, for adjusting the guide or shield. r

5. In a type-writer, in combination with the paper-roller, a movable shield provided with o 5 7. In a type-writer, in combination with a paper-roller provided with a ratchet-wheel, a spring dog engaging the ratchet wheel, a pivoted bell-crank lever to which the dog is secured and by which it is operated, and a push-pin located over the dog and by which it may be disengaged from the ratchetrwheel, substantially as and for the purpose set forth.

GODFREY H. LASAR. Vitnesses:

SAML. KNIGHT, GEO. H. KNIGHT. 

